Specimen

Materials

Business Sector

Test Types

Getting accurate, repeatable, and maximized results for aerospace composites requires a precision load strain and repeatable test conditions. In order to minimize variability of results and to get the best possible numbers for these rigid coupons, it is necessary to use a machine that has accurate guidance and is as stiff as possible - in all directions, and powered grips that clamp the specimen the same way for each and every test. This is especially true when performing tests in accordance with NADCAP, Airbus, GE, or other alignment specifications. Current standards to which this could apply include ASTM D3039, D5083, D5766, EN 2561, EN 2597, prEN 6035, ISO 527-4. ISO 527-5, and AITM 1-0007.

It is also quite common to have to perform these tensile tests at high and low temperature, which calls for an environmental chamber. The combined requirements for stiffness, alignment, repeatability, and non-ambient testing typically leads to a system configuration as shown in the photo: a high capacity, floor-mounted load frame (100 kN or 250 kN capacity), with extended hydraulic grips. In this fashion, the hydraulic "powered" part of the grip remains outside the chamber, whereas the gripping part that holds the specimen is extended into the chamber. This technique ensures that the entire length of the specimen is at test temperature - thus minimizing thermal gradients along the gauge length.

Precise alignment of the grips is ensured by the use of an AlignPro alignment device - this device alows for precise adjustment of the angularity and concentricity of the grips under both no load and loaded conditions. The alignment is verified using a strain gauged alignment cell (various cells are available conforming to different standards e.g. NACAP AC7101 and AC7122/1).

This configuration allows testing to be performed at temperatures ranging from -70° C to +350° C (-94° F to +662° F).

5900 Universal Testing Systems are engineered for precision, built for durability, and offer the flexibility for changing requirements. They are designed with standard and optional features that increase testing efficiency and improve the testing experience for the operator. A wide range of models are available for testing capacities from < 100N up to 600kN.

Please choose a subscription optionOne or more required fields are empty, complete the form to continue.One or more fields contain formatting errors, fix the errors to continue.You must agree to Instron's Privacy Policy in order to continue.

“It is our objective at Instron to provide our customers the best ownership experience by delivering the highest quality products, expert support and world-class service.”